JP2524910B2 - Sediment pumping device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sediment feeding device, and more particularly to a sediment feeding device for feeding compressed sand in a pipe by compressed air.

[0002]

2. Description of the Related Art Conventionally, there are two types of pneumatic pumping devices, which are a batch type and a continuous type, for pumping earth and sand by compressed air in a pipeline.

Batch type

FIG. 6 shows a conventional batch-type earth-and-sand pressure-feeding apparatus, where 1 is the earth-sand to be conveyed, 2 is a backhoe for conveying the earth-sand, 3 is a pressure-feed tank unit, 4 is its hopper, 5
Is a sediment pumping pipe, 6 is its discharge port, and 7 is a dumping site.

In this batch type, as shown in detail in FIG. 7, two pressure feed tanks 8a, 8 are provided under the hopper 4.
b is provided, the intake valve 9 of one of the pressure feeding tanks 8a is opened, and the earth and sand is charged into the one of the pressure feeding tanks 8a from the hopper 4. After charging the earth and sand, the intake valve 9 is closed, compressed air for pressurization is sent into one of the pressure feed tanks 8a through the pipe 10, and the pressure in the pressure feed tank 8a is increased to a predetermined pressure, and then the feed of compressed air is stopped, Open the extraction valve 11 and pressurize the tank 8a.
The earth and sand inside is sent into the earth and sand pressure feed pipe 5, and the inside of the earth and sand feed pipe 5 is pressure-fed with the compressed air for pressure feed from the pipe 12.
The two pressure-feeding tanks 8a and 8b intermittently pressure-feed the earth and sand by alternately repeating the above operation.

Continuous type

As shown in FIG. 8, the earth and sand in the hopper or earth carrier are taken in while being agitated by an agitator 13, and transported by a rotation of a screw 14 to a pressurizing device 15 having a sand pump. Thereafter, the pressurizing device 15 pushes the earth and sand into the earth and sand feeding pipe 5, and compressed air is injected from the pipe 12 to press and feed the earth and sand.

[0008]

However, the above batch method has the following problems.

(A) When discharging the earth and sand in the pumping tank, the pressure of the pumping tank gradually decreases and balances with the pressure in the vicinity of the outlet of the extraction valve, so that the earth and sand in the pumping tank cannot be completely discharged.

(B) After discharging the sediment in the pressure-feeding tank with compressed air for pressurization, the compressed air for pressurization remaining in the pressure-feed tank must be released to the atmosphere in order to take in the sediment in the pressure-feed tank. Sometimes accompanied by loud low-frequency shock noise.

Further, the above continuous method has the following problems.

(A) It is necessary to maintain a back pressure higher than the compressed air pressure by the discharge pressure of the pressure device 15 so that the compressed air injected into the discharge side of the pressure device 15 does not flow backward. Therefore, the discharge head of the pressurizing device 15 becomes large, and a large output drive motor is required.

(B) The pneumatic transportation principle is that the sand and sand plugs 16 are formed intermittently, compressed air is sent in between, and the expansion energy of the compressed air is used to pump the earth and sand. This method expects a naturally occurring sediment plug flow (air and sediment plugs are alternately arranged) by injecting compressed air into the continuous sediment flow in the pressure pipe 5. The length of 16 becomes long, and the pumping efficiency tends to decrease.

The present invention is designed to eliminate the above drawbacks.

[0015]

SUMMARY OF THE INVENTION The earth and sand pumping apparatus of the present invention comprises one and the other suction pipes connected to a earth and sand supply source.
And a valve provided on each of the suction pipes, and one and the other of the above
While connecting the suction pipe and the earth and sand pumping pipe, respectively, and others
One discharge pipe, the valve installed in each discharge pipe, and each suction
Draws sediment via a tube, and one and the other of the piston cylinder mechanism the suction sediment discharges to a corresponding one of the respective discharge pipe, the respective piston cylinder mechanism and each
And a control mechanism for actuating the valve, Ri Na more and mechanisms for introducing compressed air into said sand pumping tube, each piston Siri
The piston rods of the bonder mechanism are aligned and
Is connected to the
Suction the sand and the other piston rod moves back
When discharging, the valve of the one suction pipe and the other discharge pipe
The valve of the other suction pipe and the one of the discharge pipe are opened.
Valve is closed and one piston rod moves back
The earth and sand are discharged, and the other piston rod moves forward to absorb the earth and sand.
When pulling, the valve of the above one suction pipe and the other of the above discharge pipe
The valve closes and the valve on the other suction pipe and the valve on the one discharge pipe
Open and wherein the Rukoto.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in FIG. 1, two piston cylinders 17 for sucking in and pushing out earth and sand are arranged in a straight line, and the pistons 18 in each piston cylinder 17 are connected to each other by a connecting rod 19. Piston cylinder 1
Two hydraulic cylinders 20 are attached to the left and right of the outside of 7, and a return cylinder 21 in which the operating rod of the hydraulic cylinder 20 is connected to the center of the connecting rod 19 is used. Connected to the lower part of the hopper 4 through the earth and sand suction valve 23 by the suction pipe 22,
Moreover, it is connected to the common earth and sand pressure feeding pipe 5 via the earth and sand discharge valve 24 and the discharge pipe 25.

Since the earth and sand pumping apparatus of the present invention has the above-described structure, as shown in FIG. 2, from the state where all the earth and sand intake valves 23 and the earth and sand discharge valves 24 are closed, as shown in FIG. 17 (the right side in FIG. 3) is opened and the sediment discharge valve 24 is closed, and the other piston cylinder 17 (the left side in FIG. 3) is closed the sediment suction valve 23 and the sand discharge valve 24 is opened, and the hydraulic cylinder The piston 18 is moved to the left by extending 20.

As a result, as shown in FIG. 4, the piston 18 of one piston cylinder 17 sucks the earth and sand in the hopper 4, and the piston 18 of the other piston cylinder 17 pumps the earth and sand in the cylinder through the discharge pipe 25. It can be pumped into 5.

Next, the sediment suction valve 23 on one piston cylinder 17 side is closed, the sediment discharge valve 24 is opened, the sediment suction valve 23 on the other piston cylinder 17 side is opened, the sediment discharge valve 24 is closed, and the hydraulic pressure is set. By contracting the cylinder 20, the piston 18 is moved to the right.

As a result, as shown in FIG. 5, the piston 18 of one piston cylinder 17 pumps the soil in the cylinder into the pumping pipe 5 through the discharge pipe 25, and the piston 18 of the other piston cylinder 17 inside the hopper 4. I will inhale the earth and sand.

By repeating the same operation thereafter, the earth and sand in the hopper 4 can be continuously fed under pressure into the feed pipe 5.

[0023]

According to the present invention , the drawbacks of the batch method described above are eliminated.
It can be cleaned and one and the other piston cylinder
Align the piston rods of the das and connect them to each other.
Therefore, the structure can be made extremely simple, suction of soil and sand,
There are great benefits such as the fact that the discharges can be reliably alternated .

[0024]

[0025]

[0026]

[Brief description of drawings]

FIG. 1 is a front view of the earth and sand pumping apparatus of the present invention.

FIG. 2 is an operation explanatory view of the earth and sand pressure feeder of the present invention.

FIG. 3 is an operation explanatory view of the earth and sand pressure feeder of the present invention.

FIG. 4 is an operation explanatory view of the earth and sand pumping apparatus of the present invention.

FIG. 5 is an operation explanatory view of the earth and sand pressure feeder of the present invention.

FIG. 6 is an explanatory diagram of a conventional earth and sand feeding device.

FIG. 7 is an explanatory diagram of another conventional earth and sand pumping device.

FIG. 8 is an explanatory view of another conventional earth and sand pumping device.

[Explanation of symbols]

 1 Sediment 2 Backhoe 3 Pressurizing Tank Unit 4 Hopper 5 Sediment Pressurizing Pipe 6 Discharge Port 7 Disposal Site 8a Pressure Sending Tank 8b Pressure Sending Tank 9 Intake Valve 10 Pipe 11 Exit Valve 12 Pipe 13 Stirrer 14 Screw 15 Pressurizer 16 Sediment Plug 17 Piston cylinder 18 Piston 19 Connecting rod 20 Hydraulic cylinder 21 Return cylinder 22 Suction pipe 23 Sediment suction valve 24 Sediment discharge valve 25 Discharge pipe

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-63-176674 (JP, A) Sekikai Shou 58-149580 (JP, U) JP-B S63-35788 (JP, B2) SUN-KOKAI 54- 36510 (JP, Y2)

Claims (1)

(57) [Claims] 1. One and the other connected to a source of earth and sand
Of the suction pipes and the valves respectively provided in the suction pipes, and the one of the above
And one that connects between the other suction pipe and the earth and sand pumping pipe, respectively.
One and the other of the discharge pipes, the valves provided on each of these discharge pipes,
It draws sediment through the serial each suction tube, the upper suction sediment
Serial and corresponding one discharges to those and other pins <br/> piston cylinder mechanism of the discharge pipe, the respective piston cylinder mechanism 及
And a control mechanism for actuating the fine each valve, Ri Na more and mechanisms for introducing compressed air into said sand pumping tube, each piston
The piston rod of the ton cylinder mechanism is arranged in a straight line.
And are connected to each other, one of the piston rods above
Moves forward and sucks in dirt, and the other piston rod moves back.
When discharging the earth and sand by using the valve of the one suction pipe and the other
The valve of the discharge pipe is opened, and the valve of the other suction pipe and the one of the above
The valve of the discharge pipe of is closed and the piston rod on one side is
It moves back and discharges the earth and sand, and the other piston rod moves forward.
When sucking earth and sand, the valve of the suction pipe on one side and the
The valve of the discharge pipe is closed and the valve of the other suction pipe and the discharge of one
Sediment pumping device according to claim Rukoto valve tube is opened.